Home / 686,426.80-1,029,737.40-213,062.80

Finding the Fourth Proportional to 686,426.80, 1,029,737.40 and 213,062.80

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Solution

The fourth proportional to 686,426.80, 1,029,737.40 and 213,062.80 is: 319,624.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,426.80 : 1,029,737.40 = 213,062.80 : x
  2. Step 2: Convert to fraction form
    686,426.80/1,029,737.40 = 213,062.80/x
  3. Step 3: Cross multiply
    686,426.80x = 1,029,737.40 × 213,062.80
  4. Step 4: Simplify right side
    686,426.80x = 219,398,733,708.72
  5. Step 5: Solve for x
    x = 219,398,733,708.72/686,426.80
  6. Step 6: Final answer
    x = 319,624.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.